CN107620745A - A kind of Milling Process fixture hydraulic control system - Google Patents
A kind of Milling Process fixture hydraulic control system Download PDFInfo
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- CN107620745A CN107620745A CN201610550976.5A CN201610550976A CN107620745A CN 107620745 A CN107620745 A CN 107620745A CN 201610550976 A CN201610550976 A CN 201610550976A CN 107620745 A CN107620745 A CN 107620745A
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- valve
- control valve
- hydraulic
- solenoid directional
- feeding
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Abstract
The present invention relates to hydraulic machinery technical field, more particularly to a kind of hydraulic control system of Milling Process fixture, including pressure switch, oil cylinder, hydraulic pump, the clamping control loop and feeding control loop of hydraulic pump are connected respectively, filter is provided between oil cylinder and hydraulic pump, clamp the pressure-reducing valve that control loop includes being sequentially connected, check valve A, solenoid directional control valve A and clamping cylinder, pressure-reducing valve connects hydraulic pump, the feeding control loop includes the solenoid directional control valve B being sequentially connected, feed converting unit and feed cylinder, solenoid directional control valve B connection hydraulic pumps, the feeding converting unit includes the flow speed control valve being connected in parallel, check valve B and control valve, the pressure switch connects solenoid directional control valve A respectively, solenoid directional control valve B and control valve.Hydraulic control system in the present invention, the clamping and feeding operation of workpiece can be achieved, ensure the clamping quality of fixture, and then ensure workpiece processing quality, and the impact during feeding and noise can be avoided.
Description
Technical field
The present invention relates to hydraulic machinery technical field, more particularly to a kind of hydraulic control system of Milling Process fixture.
Background technology
Certain part needs, in pipe fitting end face Machining Arc, to be milling machine operation for ensure the quality generally use of processing, add
Fixture used in work can realize Automatic-clamping and auto-feed, and its control process is：Workpiece clamping-workpiece F.F.-work enters-workpiece
Rewind-stopping-workpiece unclamps.Existing processing hydraulic control system often exists occur when in workpiece F.F. in the course of the work
The situation that workpiece loosens, cause the accessory size error of processing larger；And when entering forward to work change soon in workpiece, often produce
Raw impact, and impact noise is produced, noise pollution is formed, influences the environment of processing.
The content of the invention
It is an object of the invention to solve the above-mentioned technical problem present in existing fixture hydraulic system, there is provided one kind can protect
The clamping quality of fixture is demonstrate,proved, and then ensures workpiece processing quality, and the Milling Process of impact and noise during feeding can be avoided
Fixture hydraulic control system.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of Milling Process fixture hydraulic control system, including pressure switch, oil cylinder, hydraulic pump, hydraulic pressure is connected respectively
The clamping control loop and feeding control loop of pump, are provided with filter, clamp control loop between the oil cylinder and hydraulic pump
Including pressure-reducing valve, check valve A, solenoid directional control valve A and the clamping cylinder being sequentially connected, the pressure-reducing valve connects hydraulic pump, it is described enter
Solenoid directional control valve B, feeding converting unit and the feed cylinder for including being sequentially connected to control loop, the solenoid directional control valve B connections
Hydraulic pump, the feeding converting unit include flow speed control valve, check valve B and the control valve being connected in parallel, the pressure switch point
Lian Jie not solenoid directional control valve A, solenoid directional control valve B and control valve.
In above-mentioned technical proposal, further, the control valve uses the bi-bit bi-pass electro-hydraulic reversing valve with damping.
The present invention sets check valve in control loop is clamped, and will clamp control loop and feeding control loop is kept apart,
Ensure when feeding work, stable operating pressure is remained in clamping cylinder, so that it is guaranteed that the clamping quality of fixture；Feeding control
Control valve in loop processed uses the bi-bit bi-pass electro-hydraulic reversing valve of band damping, when can avoid commutating high speed fluid because of inertia shape
Into vacuum, so as to eliminate caused impact and noise when workpiece enters forward to work change soon.
Brief description of the drawings
Fig. 1 is hydraulic control system configuration schematic diagram of the present invention.
In figure：1st, oil cylinder, 2, filter, 3, hydraulic pump, 4, pressure-reducing valve, 5, check valve A, 6, solenoid directional control valve A, 7, clamp
Cylinder, 8, solenoid directional control valve B, 9, flow speed control valve, 10, check valve B, 11, control valve, 12, feed cylinder.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Reference picture 1, the hydraulic control system of the present embodiment, including pressure switch, oil cylinder 1, hydraulic pump 3, connect respectively
The clamping control loop and feeding control loop of hydraulic pump 3, filter 2 is provided between the oil cylinder 1 and hydraulic pump 3.Clamp
Control loop be used for control workpiece clamping and unclamp operation, feeding control loop be used for control workpiece F.F., workpiece, rewind and
The operation of stopping, specifically it being achieved using following structure：Clamp control loop include be sequentially connected pressure-reducing valve 4,
Check valve A5, solenoid directional control valve A6 and clamping cylinder 7, the pressure-reducing valve 4 connect hydraulic pump 3, the feeding control loop include according to
The solenoid directional control valve B8 of secondary connection, feeding converting unit and feed cylinder 12, the solenoid directional control valve B8 connections hydraulic pump 3 are described
Feeding converting unit includes flow speed control valve 9, check valve B10 and the control valve 11 being connected in parallel, and the pressure switch connects respectively
Solenoid directional control valve A6, solenoid directional control valve B8 and control valve 11.
In the present embodiment, during Workpiece clamping, pressure switch, which sends electric signal, acts solenoid directional control valve A6, and fluid is through subtracting
Pressure valve 4, check valve 5, solenoid directional control valve A6 enter clamping cylinder 7, and operation is clamped to workpiece.After Workpiece clamping, pressure after
Electrical equipment sends electric signal, acts solenoid directional control valve B8 and control valve 11, and now hydraulic control system is from clamp operation to workpiece
F.F. is changed, and now fluid is directly entered feed cylinder 12 through solenoid directional control valve B8, control valve 11, and feed cylinder 12 proceeds to certain row soon
Cheng Hou, pressure switch control control valve 11 act, and fluid is entered feed cylinder 12 through flow speed control valve 9, so as to complete soon forward to work
The conversion entered；Equally, rewind can be realized respectively by controlling solenoid directional control valve A, solenoid directional control valve B and control valve action, stopped
Only and workpiece unclamp operation.
During workpiece F.F., because feed cylinder is no-load running, feed cylinder rodless cavity pressure is set less than pressure-reducing valve
Constant-pressure, can now pressure-reducing valve be caused not work, pressurizing valve inlet pressure declines, and outlet pressure also declines therewith, makes workpiece not
It can clamp, cause workpiece to loosen；In the present embodiment, set between the pressure-reducing valve and solenoid directional control valve A in clamping control loop
One check valve A, so in feed cylinder F.F., check valve A is closed, and check valve A will clamp control loop and feeding control oil
Road isolates, and ensures the operating pressure of clamping cylinder, to prevent during workpiece F.F., workpiece loosens.
When feed cylinder makees forwarding operation, a large amount of fluid flow fast through solenoid directional control valve B and control valve enters feed cylinder
Rodless cavity；When being converted to work from workpiece F.F. and entering to operate, control valve is closed suddenly under the control of pressure switch, not followed by
Continuous fuel feeding, but the fluid of control valve outlet conduit can now make control because inertia is still at a high speed in the duct to feed cylinder flowing
Fluid emptying after valve processed, forms larger vacuum；It is true the fluid flow direction control valve come out by speed governing valve outlet simultaneously after
Vacancy, produce larger compression shock and noise.Control valve in the present invention uses the bi-bit bi-pass electro-hydraulic reversing valve with damping,
By adjusting the throttle at both ends, make the switching action of valve element slack-off, and then extend commutating period, gradually turn down valve port, from
And the vacuum for avoiding high speed fluid from being formed by inertia, so as to eliminate caused impact and noise in transfer process.
The present invention is not limited to above-described embodiment, in claims of the present invention and specification limited range,
The various deformations or amendments that those skilled in the art can make without creative work all fall in the scope of protection of the present invention.
Claims (2)
1. a kind of Milling Process fixture hydraulic control system, including pressure switch, oil cylinder, hydraulic pump, hydraulic pump is connected respectively
Clamping control loop and feeding control loop, be provided with filter between the oil cylinder and hydraulic pump, it is characterised in that：Clamp
Control loop includes pressure-reducing valve, check valve A, solenoid directional control valve A and the clamping cylinder being sequentially connected, and the pressure-reducing valve connects hydraulic pressure
Pump, solenoid directional control valve B, feeding converting unit and feed cylinder, the electromagnetism that the feeding control loop includes being sequentially connected change
To valve B connection hydraulic pumps, the feeding converting unit includes flow speed control valve, check valve B and the control valve being connected in parallel, the pressure
Relay connects solenoid directional control valve A, solenoid directional control valve B and control valve respectively.
2. Milling Process fixture hydraulic control system according to claim 1, it is characterised in that：The control valve uses band
The bi-bit bi-pass electro-hydraulic reversing valve of damping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610550976.5A CN107620745A (en) | 2016-07-13 | 2016-07-13 | A kind of Milling Process fixture hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610550976.5A CN107620745A (en) | 2016-07-13 | 2016-07-13 | A kind of Milling Process fixture hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107620745A true CN107620745A (en) | 2018-01-23 |
Family
ID=61087133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610550976.5A Pending CN107620745A (en) | 2016-07-13 | 2016-07-13 | A kind of Milling Process fixture hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107620745A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854552A (en) * | 2018-12-29 | 2019-06-07 | 成都华科阀门制造有限公司 | A kind of fast actuator and its control method at a slow speed based on vacuum pump application |
| CN112025241A (en) * | 2020-08-26 | 2020-12-04 | 杭州传智自动化科技有限公司 | Outer chain plate and pin shaft press-fitting equipment for escalator chain |
| CN113048110A (en) * | 2021-04-19 | 2021-06-29 | 无锡贝斯特精机股份有限公司 | Clamp hydraulic system for boring interrupted holes |
-
2016
- 2016-07-13 CN CN201610550976.5A patent/CN107620745A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854552A (en) * | 2018-12-29 | 2019-06-07 | 成都华科阀门制造有限公司 | A kind of fast actuator and its control method at a slow speed based on vacuum pump application |
| CN109854552B (en) * | 2018-12-29 | 2020-10-09 | 成都华科阀门制造有限公司 | Fast and slow speed actuator based on vacuum pump application and control method thereof |
| CN112025241A (en) * | 2020-08-26 | 2020-12-04 | 杭州传智自动化科技有限公司 | Outer chain plate and pin shaft press-fitting equipment for escalator chain |
| CN113048110A (en) * | 2021-04-19 | 2021-06-29 | 无锡贝斯特精机股份有限公司 | Clamp hydraulic system for boring interrupted holes |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180123 |
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| WD01 | Invention patent application deemed withdrawn after publication |